Internal-combustion engine.



J. G. A. KITCHEN.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED DEO.28,1908.

Patented June 1, 1909.

FIG.6.

FIG.2.

flzzderaokm/ze n g6: r/w flame,

INTERNAL-CGMBUSTXON ENGINE.

Specification of Letters Fatent.

Patented June 1, 1909.

Application filed December 18, 1 9 08. Serial No. 169302.

T all whom it may concern:

Be it known that l, Jonn Unonon Atrsnl lJGflTlD" :snoon Knonnmfiasubject of the King of Great Britain and Ireland, and resident ofLancaster, in the county of Lancaster, England, have invented certainnew and useful IlIlpl'OVQillQlllS in Internal(ombustion Engines, ofwhich the following is it specification.

This invention relates to innn'ovenionts in internal combustion motorsin which the usual tappct or mushroom valves are replaced by ports inthe cylinder bodies or easings and in inovsble linings or valves be:

tween the piston and the casings. r

The object of the invention is chiefly to Sim lily and clicapen thisclass of motors.

T iis invention consists in the arrangement of a revoluhle lining orvalve inside a cylinder or casing provided with :1-11 admission andexhaust port in which lining or valve the piston moves, the rotation ofwhich valve opens and closes the cylinder ports as required for 1 cycle.

the governing of the motor by the rotation of the valve.

On the drawing appended hereunto a construction of the improved motorvalve and valve gear are represented as examples how the invention maybe carried out.

Figurel shows. a vertical section through the motor and Fig. 2 a crosssection through the same at the ports, with a valve arranged to makehalf a revolution for the four stroke Figsv 3 to 6 show the positions ofthe valve at the commencement respectively of the four strokes of themotor.

The cylinder body or casing 1 hereinafter referred to as the casing, isprovided near to its upper or outer end with an exhaust port 2 end anadmission. port 3. The casing l and the cylinder end or head l arepreferably separate pieces as shown, and the lower end oi the casing isprovided with a flange 5 for securing it to the bed plate or crankchamber. The casing may he jacketed for water as shown or provided withgills for air cooling and is provided with firing plugs 22- in the usualway. Inside the casing 1 is provided with a revoluble liner or valve 6,in which the piston 7 moves, the liner being made gas tight with thecasin' at the too'end by means of piston rings 8 ant near the oottoinend by means of piston rings 9 or in any other suitable Wey. In thevalve 6 are provided two ports 10 and 11 opposite each other rcgisten:mg with the portsiZ and 3 alternately. The

held in position preferably by b carried by the lower end of the cssingor the crank case. is shown an intermediate casting 13 is arranged whichmay be considered as a continuation of the crank case/12 On the bottomflange i l or" this casting is bedded a steel rin 15, on w ich is placeda ring if) with holes containing hells, which support the steel ring 17fixed to the bottom end of the valve 6. preferably rotated by meansolworni goering, and for this purpose a wornuvheel 18 is cut QP-ilXOtlon the lower end of the valve and a worm 19 having a multiple thread isfixed upon shalt 2t) supported in bushes in hner is K. '1 he valve isthe cestin 13 and .iurallel to the crankshaft 21 to which the piston 7is connected by the pitnian T he shaft 20 is driven l'roin thecrankshalt by sprocket wheels 2-5, 23 and driving chain band 24-. Theratio of the Wheels and worm is such, that the valve 6 makes hall arevolution for every two revo--:.

lutions of the crank shaft or for tour piston strokes. Obviously thevalve 6 may be driven by any other suitable kind of gearing in the sameratio to the crankshaft.

On the drawing the piston is shown at the end of the exhaust an dcoininenceniei-lt of the suction stroke, and the vnlve is in such a position, that the port 10 has just passed the exhaust port 2 and closedit. As tne valve is further rotated in the direction of the arrow, theport 11 opens the admission port The ports 2, 10, and i1 may have acircumferential length oi about one sixteenth of t .o circumference, orbe otherwise so dimensioned that they keep the exhaust open for aboutone eighth of u revolution of the valve or during the entire stroke. Thesuction port 3 may have the some length but is preferably shortened atthe leading 0nd us slmwn, so that the valve does not open the admis onport 3 till the piston has made about one quarter of its down stroke,and produced a partial vacuum in the cylinder, which causes the gasmixture to rush in (prickly and accelerate the carburetor jet. Anotherobject .obtaincd thereby is that the "us is for a shorter "time in thecylinder, bciore the admission sort clocd and com n'ession bc ius leavi7 h 3 exhaust port 2, remains closed during the admission and exhaust.

compression stroke, at the end of which the valve has the position shownin Fig. 5, and during the following firing stroke, at the end of whichthe valve occupies the position shown in FiglG. The port 11 then opensthe exhaust port 2 and the action repeats itself. The ports 10 and 11thus act alternately for easing 1 are set so that their closing edgesare distant from each other by about 135 degrees. Lead can be given tothe valve by setting the wheel 24 on the shaft 20 accordingly.

shaft, and gearing adapted to drive said valve from the crankshaft at apositive ratio.

valve, a crankshaft and 2. In an internal combustion engine thecombination of a cylindrical casing having a suction and an exhaustport, a cylindrical revoluble valve fitting into said casing and havingports adapted to register with the ports in said casing, a piston insidesaid a pitman connecting said piston. and crai'ikshaft, and gearingadapted to drive said valve from the crankshaft so as to make onerevolution for twice as many revolutions of the crankshaft as there areports in said valve.

3. In an internal combustion engine, the combination of a cylindricalcasing having a lateral suction anda lateral exhaust ort near to itsouter end, a cylindrical rcvolu ale valve ting into said casing andhaving two diametrically opposite ports adapted to register with theports in said casing, a piston inside said valve, a crank shaft and apitman con- The ports in the neeting said piston and crank shaft, and

gearing adapted to drive said valve from the crankshaft so that thevalve makes one revolution for four revolutions of the crankshaft.

4. In internal combustion engines the combination of a cylindricalcasing having a lateral suction and a lateral exhaust port near itsouter end, a revoluhle cylindrical valve fitting into said casingadapted to open and close said ports, a piston inside said valve, acrankshaft and a pitman connecting said iston and crankshaft, awormwheel attached to said valve at its inner end, a shaft parallel tothe crankshaft and a worm with multiple thread engaging with saidwormwheel and fixed on the said shaft and gearing adapted to drive saidshaft from the crankshaft.

5. In internal combustion engines the coinbination of a cylindricalcasing-having a lateral suction and a lateral exhaust ort near to itsouter end, a cylindrical revolu le valve fitting into said casing andhaving two diametrically opposite ports adapted to register with saidports in said-casing, a piston inside said valve, a crankshaft and apitman connecting said piston and crankshaft, a worm wheel attached tosaid valve at its inner end, a shaft arallel to said crankshaft and aworm with multiple thread engaging with said worm wheel and fixed onsaid shaft, a chain pulley on the crankshaft, another chain pulley onthe worm shaft, and a driving chain passing around said chain pulls s,the chain pulleys, worm and wormw eel eing soproportioned that theyrotate the said valve once for every four revolutions of thecrankshaft.-

In witness whereof I have hereunto set my signature in the presence oftwo witnesses.

JOHN GEORGE AULSEBROOK KITCHEN. Witnesses: 1

CARL BoLLn, WILLIAM JONES.

